US3122891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryogenic methods and apparatus
Assignee: Air Products and Chemicals Inc
•
Filing: 1958-12-11
•
Granted: 1964-03-03
•
Expires: 1978-12-11
Abstract
No abstract record available.
Inventors
- 👤 William H Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
B; B64; B64G; B64G5/00; Y; Y10; Y10S; Y10S62/00; Y10S62/05; Y10S62/13; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A METHOD FOR MAINTAINING CONTINUOUSLY IN CONDITION FOR LAUNCHING ROCKET MISSILES POWERED BY LOW-BOILING PROPELLANT CONTAINED IN A CHAMBER THE OUTER WALL OF WHICH IS THE OUTER WALL OF THE MISSILE, COMPRISING THE STEPS OF (1) ENCLOSING AT LEAST THAT PORTION OF THE OUTER WALL OF THE MISSILE WHICH IS THE OUTER WALL OF THE CHAMBER TO PREVENT ENTRY OF AMBIENT ATMOSPHERE FROM OUTSIDE THE ENCLOSURE TO WITHIN THE ENCLOSURE, (2) CONTACTING THE EXTERIOR OF THE ENCLOSED POROUS OF THE OUTER WALL OF THE MISSILE WITH A GAS AT A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE TEMPERATURE OF THE PROPELLANT AND FREE FROM SUBSTANCES HAVING A SOLIDIFICATION TEMPERATURE ABOVE THE TEMPERAURE OF THE PROPELLANT, AND (3) THEREAFTER MAINTAINING A FLUID WITHIN THE ENCLOSURE IN CONTACT WITH THE EXTERIOR OF THE ENCLOSED PORTION OF THE OUTER WALL OF THE MISSILE AND AT A TEMPERATURE BELOW THE BOILING TEMPERATURE OF THE PROPELLANT AT THE EXISTING PRESSURE AND FREE FROM SUBSTANCES WHICH HAVE A SOLIDIFICATION TEMPERATURE ABOVE THE TEMPERATURE OF THE FLUID, FOR AN EXTENDED PERIOD OF TIME AT LEAST UNTIL THE COMPONENTS OF THE MISSILE REACH THERMAL EQUILIBRIM.
Claim 2
Independent Claim
185 words
A METHOD FOR MAINTAINING CONTINUOUSLY IN CONDITION FOR LAUNCHING ROCKET MISSILES POWERED BY LOW-BOILING PROPELLANT CONTAINED IN A CHAMBER THE OUTER WALL OF WHICH IS THE OUTER WALL OF THE MISSILE, COMPRISING THE STEPS OF (1) ENCLOSING AT LEAST THAT PORTION OF THE OUTER WALL OF THE MISSILE WHICH IS THE OUTER WALL OF THE CHAMBER TO PREVENT ENTRY OF AMBIENT ATMOSPHERE FROM OUTSIDE THE ENCLOSURE TO WITHIN THE ENCLOSURE, (2) CONTACTING THE EXTERIOR OF THE ENCLOSED POROUS OF THE OUTER WALL OF THE MISSILE WITH A GAS AT A TEMPERATURE SUBSTANTIALLY HIGHER THAN THE TEMPERATURE OF THE PROPELLANT AND FREE FROM SUBSTANCES HAVING A SOLIDIFICATION TEMPERATURE ABOVE THE TEMPERAURE OF THE PROPELLANT, AND (3) THEREAFTER MAINTAINING A FLUID WITHIN THE ENCLOSURE IN CONTACT WITH THE EXTERIOR OF THE ENCLOSED PORTION OF THE OUTER WALL OF THE MISSILE AND AT A TEMPERATURE BELOW THE BOILING TEMPERATURE OF THE PROPELLANT AT THE EXISTING PRESSURE AND FREE FROM SUBSTANCES WHICH HAVE A SOLIDIFICATION TEMPERATURE ABOVE THE TEMPERATURE OF THE FLUID, FOR AN EXTENDED PERIOD OF TIME AT LEAST UNTIL THE COMPONENTS OF THE MISSILE REACH THERMAL EQUILIBRIM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |